Abnormal level of enzymes in specimens from resp org/thrx

This code indicates an abnormal concentration of enzymes detected in laboratory specimens obtained from the respiratory system or thoracic cavity. This could include elevated or decreased enzyme levels found in bronchoalveolar lavage (BAL) fluid, pleural fluid, or lung tissue biopsies. It signifies a non-specific laboratory finding that warrants further investigation.

Use this code when documentation specifies an abnormal enzyme level in a respiratory or thoracic specimen, such as elevated lactate dehydrogenase (LDH) in pleural fluid or abnormal angiotensin-converting enzyme (ACE) in BAL fluid, without a definitive diagnosis yet established. This code is appropriate for reporting an abnormal lab finding when the underlying cause is unknown or not yet confirmed.

• This is a symptom/sign code; always sequence it after the definitive diagnosis if known.
• Do not use this code if a more specific diagnosis explaining the abnormal enzyme level is documented (e.g., malignancy, infection).
• Ensure the documentation clearly specifies the source of the specimen (respiratory organ or thorax) and that the enzyme level is abnormal.